微珠阵列逆反膜性能的改善

光学元件阵列作为逆向反射器,具有准相位共轭特性,微珠阵列作为其中一类,已广泛用于显示、配合目标和交通标志.从衍射效应看,远场条件下大微珠的逆反性能优于小微珠.本文提出并实现了用激光法制作玻璃微珠,并且,为提高逆向反射效率和性能,又提出并实现了大微珠和小微珠镶嵌的制膜技术.所制成的新膜,从原理上和实验效果上均优于目前市场上已有的同类产品.它对该类产品的性能改进提供了新的前景.

HOW TO IMPROVE RETROREFLECTIVE PROPERTY OF BEAD ARRAY FILM

Optical element arrays are acted as the retroreflectors and have pseudo conjugate property.Bead array is one type of the optical element arrays used in displays,ranging targets and traffic signs.In view of diffraction effects,bigger glass beads being better than usual smaller for far field,we use CO 2 laser beam to produce them.In order to increase the retroreflective efficiency and concern the cases of the near and far field,we put forward and realize the technology of inlaying small beads into big beads.In view of principles and experimental effects,our new film is superior to present representative 901 film of Jiaojiang Company of China and 8910 film of 3M Company of America.It displays industrial prospects in update highway signs and in national defense applications.